Mechanical chipping tool



Feb. 24, 1948. E E, BASE-:LER 2,4-3@,54

MECHANI CAL CHIPPING TOOL Filed March 8, 1946` Patented Feb. 24, 1948 UNITED STATES PATENT OFFICE MECHANICAL CHIPPING TOOL Emery Emil Baseler, Hollywood, Calif.l

Application March 8, 1946, Serial N o. 653,219

3 Claims.

This invention relates to new and useful improvements and structural refinements in chipping tools, more particularly, to tools such as are commonly attached to electric or pneumatic hammer heads for use in removing dirt, rust, scale and other foreign material from metallic sheets such as the decks, armor plate and the superstructure in general of ships.

Conventional chipping tools employed for this purpose usually assume the form of a chisel-like blade and since the same must be relatively narrow in order to follow the irregularities of the surface being cleaned, the chipping operation usually becomes a tedious and a time-absorbing` task.

' It is therefore the principal object of the invention to generally increase the eiliciency of such chipping tools by providing the device of the character herein described, in which a plurality of chipping blades, arranged in a spaced parallel relationship and adapted for attachment to the hammer head, are used to form a chipping edge of a relatively greater width than has heretofore been possible to employ in tools of conventional design.

A further object o'f the invention is to provide such tool with a resilient, shock-absorbing handle, whereby the chipping edges of the several blades may be urged simultaneously against the work and which will substantially minimize the excessive vibration usually associated with the use of such tools.

Another object of the invention is to provide a chipping tool which may be readily attached to or removed from the hammer head and which may be easily and quickly disassembled for purposes of inspection or repair.

An additional object of the invention is to provide a chipping tool which is of simple construction and which is particularly adapted to withstand the strain of the work for which it is intended.

With the above more important objects in view, and such other objects as may become apparent as this specication proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the invention, showing the same attached to a pneumatic hammer head and in readiness for use.

Figure 2 is a plan view of the invention per se, with the handle thereof removed to reveal the construction and arrangement of the chisel-like blades.

tion, taken approximately in the Figure 3 is a cross-sectional view of the invenplane of the longitudinal center line thereof, and -Y Figure 4 is a cross-sectional view taken in' the plane of the line 4-4 in Figure 3.

Like characters of reference are used to -desig'- nate like parts in the specication and (throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of an elongated plate designated generally by the reference character 5, the same being formed with a plurality of parallel slots 6, extending longitudinally from one end of the plate as is best illustrated in the accompanying Figure 2.

The slots 6 thus define a plurality of spaced, chisel-like blades 'I, joined together at one end by the body portion 8 of the plate 5 and provided at their remaining ends with the sharp chipping edges 9.

An adaptor shank I0 is welded or otherwise suitably secured to the body portion 3, the shank being universally receivable in a hammer head, such as is illustrated by the pneumatic hammer head II in the accompanying drawings.

A yieldable handle designated generally by the reference numeral I2, consists of a pair of side members I3 which straddle the blades l and are connected together at the upper end by means of a transversely extending hand grip I4. The lower ends of the side members I3 are angulated to provide the inturned portions I 5, the latter engaging the undersurface of the innermost of the blades 'I.

A transversely extending channel I5 connects the side members I3 medially of their length, this channel being of an inverted U-shaped crosssectional configuration and adapted to receive a shock-absorber I1. The latter assumes the form of a resilient block extending transversely the full width of the plate 5, with the lower surface I8 thereof bearing against the upper surfaces of the blades 1.

A reinforcing sheet or plate I9 is welded or otherwise suitably secured to b-oth the body portion 8 and the adaptor shank I Il, the sheet I9 underlying the plate 5 as is best illustrated in the accompanying Figures 1 and 3.

A pair of spaced support arms 29 are secured at one end to the channel I 6 adjacent the side members I3, the arms 20 being angulated substantially as shown to lie dat against the upper surface of the plate 5. A hook portion 2| is formed at the remaining end of each of the arms 20, these portions passing around the end of the body portion 8 and underlying the sheet I 9, as is best 3 apparent from the accompanying Figures 1 and 3.

The arms 20 are also provided medially of their length with a pair of transversely aligned trunnions 22, the latter being in turn, formed With the aligned apertures 23, adapted to receive a removable keeper bar 24. This bar assumes the form of a bolt formed at one end With a head 25, while receivable on the remaining end thereof is a nut 26 retained in position by theY cotter pin 21.

The keeper bar '24 is disposed on 'the underside of the blades l and engages the adjacent edge 28 of the aforementioned sheet I9.

Having thus described the constructional details of the invention, its method of operation will now be presented.

When the invention is placed in use, the chipping tool is positioned in the hammer head Il as is best illustrated in Figure 1. Thereupon, 'by holding the handle of the hammer head with one hand and the hand grip il@ the '.other, the tool may 'be conveniently and ,easily urged against the Work.

The increased width fof the chipping edge resulting from the combined arrangement of the blades l will substantially increase the rate of speed lat which the :chipping operation may 'be undertaken. It will be observed that the iridependence of the blades as `provided bythe intervenir-ig slots 6 will .enable the tool to conform to the irregularities of the surface being cleaned, 'while even :pressure may ybe *imparted lsimultaneously ito the several blades through .the handle l2. 'The shock absorber H will eiiectively minimize the excessive vibration such as 'would otherwise be transmitted from vthe blades to the handle land tothe Workers hand positioned on the same.

While iin the foregoing there has been shown .and :described the preferred embodiment of this invention it is to be understood that minor4 changes in the details of construction, combination and arrangement of vparts may be resorted to 'without departing from the spirit and scope of the invention as claimed;

What I yclaim as my invention is:

'1. A mechanical chipping -tool comprising in combination, an elongated plate formed `with a plurality of parallel slots extending longitudinally from `'one end thereof, said slots dening spaced, chisel-like -blades connected at rone end by -t'he 'body portion of said plate, sharp chipping edges Y :at the remaining ends of said blades, an adapter shank on said Abody portion for attachment to a hammer head, a yieldable handle ycomprising a pair of side members straddling said blades adjacent 4the chipping edges thereof, a transversely `extending' hand grip connecting said side mem bers at their upper ends, an inturned portion at the lower end of each of said side members, ysaid inturned portions engaging the underside of the outermost of rsaid blades, a transversely extending channel connecting said side members medially of their length, said channel having an inverted U-shaped cross-sectional configuration, a resilient block in said channel, said block bearing against the upper surfaces of said blades, a reinforcing sheet underlying said body portion, a pair of spaced supportV arms connected at one end to said channel adjacent said side members, said arms being angulated to lie against the upper :surface of said plate, a .hook portion formed at the remaining end of each of said arms, said hooked portions passing around the end of said body portion and underlying said sheet, a pair of transversely aligned trunnions provided medially the length of said arms, and a keeper bar removably `positioned in said trunnions, said bar being disposed .on the underside of said blades and engaging the adjacent edge of said sheet.

"2. A mechanical chipping tool comprising, an elongated plate formed with a plurality of parallel slots extending longitudinally from -one end thereof, said slots defining spaced, `chisel-like blades connected at one end by the body portion of said plate, an adaptor sha-nir on Asaid body portion for attachment to a hammer head, a yieldable handle adjacent the free ends of said blades, a 'pair of side members carried by said handle straddling said plate adjacent the free ends of said blades. an inturned portion at one terminal Aof `each o'f said side members, said inturned portions engaging the underside V'of said plate, a ytransversely extending channel connecting said side members medially of their length, a resilient block in said channel, said vblock bearing against the upper surfaces of said blades, and means for attaching said handle to said plate,

r3. The combination of claim 2 wherein 'said means for attaching said vhandle to said plate includes, a pair of spaced support arrns connected at one end thereof to said handle, a hoo portion at the remaining vend of each of said arms, said hooked portions engaging said body portion of said plate,- a pair of transversely aligned trunnions rredially of the length of said arms, and a keeper bar removably positioned in said trunnions, said bar engaging the underside of said blades.

EMERY EML BASELER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED FSTATES PATENTS Number Name Date 1,320,191 Ash Oct. 28, 1919 v1.919 351 Willadsen July .25, 1933 2,043,442 McNeil June 9, 1936 2,279,454 Fischer Apr. 14, 1942 

